Circular-saw machine



2 sheets-sheet 1 Filed Sept. 6, 1934 gifs/19 Fl-[Gui AToRN/EY April 28,1936. H, E, TAU-rz 2,038,810

C IRCULAR SAW MACHINE Filedv Sept. 6, 1934 2 Sheets-'Sheet 2 FIG. .5

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'/NVENTR l Y @@QJQ ATTORNEY yPatented 11936 l I l UNITED *STATESy`SPA-TENT oFF-ICE Herbert E. Tang/Milwaukee, Wis., assigner to. The DeltaManufacturing Company, Milwaukee, Wis., a corporation of WisconsinApplication september s, 1934, serial No. 742,881

11 claims. (c1. 143-33) 'I'he invention relates to circular-saw machinespasses through an opening l2| in the plate, as and the like. l seen inFig. 4, the vopening being somewhat larger In a circular-saw machine itis necessary to than the diameter of the bolt so as to permit have theplane of the saw blade in parallel rela-.- lateral adjustment f .thePlate, the other ella4 tion to the direction of work travel,which-travel of the plate pivoting on 'the screw I9. Fine ad- 5 isdetermined by guide surfaces such as gage J'ustment of the plate I8 iseffected by'a hori- .grooves in the saw table. Zontal set-screwl 22threaded in the plate and An object of the present invention is toprobearing against the screw 20, the set-screw bevide simple andinexpensive means whereby the ing provided with a. lock-nut 23.

m relative position of the saw with respect to the A The plate I8 formsthe top member of a frame 10 table can be readily and accuratelyadjusted so which comprises a horizontal bottom bar 24 conas to insureparallelism between the plane of the nected-to the plate by a pair ofspaced verticalsaw and thel direction of work travel, notwithlOdS 25.the 'latter having reduced threaded ends standing variations inmanufacture. Passing tvhlOllgh the Plate arid bar and Secured Anotherobject of the invention is to facilitate thereto by nuts 26. Lf l5assembly and adjustment of the machine by pro- A bearing bracket 21,preferably of die-cast viding an arbor-carrying frame which een beconstruction, has apertured lateral extensions 28 easily secured to thebase or standard (f the ma- 'and 29 'Slidebly tting 011 the VerticalrOdS 2,5, and chine the frame carrying means for adjusting extendsthrough. Slots 30 fOlmed in the Casing vthe elevation of the saw arbor.Walls It and I2, the slots opening at the upper 20 The invention furthereonsistsjn the several surface of the standard. A horizontal saw arbor.features hereinafter described and claimed. 3| S-.Oumlled 1n the bearingbracket 21 and In the accompanying drawings, which show two' carries apulley 32 at one end and a circular saw embodiments of the invention, ly l33y at the other end, the saw being placed in the Fig. 1 is asectional elevationl of one form of Saw Chamber I'I. 25 circular-saw`machine constructed in accordance The elevation 0f the Saw arbor isadjusted by with the in ven n; l vertical screw-shaft 34 threadedthrough a bush- Fig. 2 is a secti nai view taken on the line 2-2 111g,35 in the bracket 27- The upper end of the of Fig 1; 'v screw-shaftbears against the lower face of the Fig. 3 -is al top plan viewof themachine with Plate I8 and the bottom end portion of the screw- 30l thetable removed; shaft is journalled in the bottom bar 24. A gear 36 Fig.4 is a sectional view taken on the line 4-4 ,Secured to the lowerP01jti0n 0f the SCTeW Shaft of Fg 3;- rests on the bar to support theshaft, and. meshes Fig. 5 is an elevation,.part1y in section, of anwitha geell 31- 0n a horizontal shaft 38. The 3; other form of maohine;shaft 38V is journalled in bearing members 39 35 Fig 6 is a, ree-,1- endview of the machine of Fig, secured to the bottom bar 24 andextendsthrough 5, parts being broken away and parts being shown aSomewhat larger Opening 40 in the end wall I`4 in section 0f thestandard, the outer end of the shaft carry- Fig. 7 is a top plan view ofthe maehine of ing a hand-crank 4I. The rotation of thehand- 40 Fig. 5,the table being removed, and crank serves to turn the verticalscrew-shaft 34' 40 Fig. a is a. sectional view taken on the une s-sthrough the connected gearing, thereby changof Fig 5 l ing the elevationof the arbor-carrying bracket 21. 1n that form of the invention shown inFigs, 4 The circular saw 33 is disposed in a vertical o 1 1 to 4, l0designates a supporting base or stand- Plane and projects thrOugh a slot42 in a soft fard having spaced upright wens n, |2. and |3, metal insertplate 43 of asaw table 44. The saw 45 connected^by end walls I4 and I5,thereby formtable iS Previded With the usual gage grooves 45 ing ahousing with two laterally adjacent cham- Yand is secured to the base orstandard I0, prefbers I6 andl I1, the latter being a saw chamber erablyna manner .permitting thetable to be and sawdust chute. y tilted. In thepresent instance, lthe bese or 5 The chamber I6 opens at the upper endof the standard I0 is formed at opposite ends withtrun- 50 standard andis closed by a flat horizontal metal nion brackets 46 each having anarcuate saddleplate I3 resting on the machined horizontal top formingbearing face 41 and` a radial bore 43. surface of the standard. Theplate I8 is secured ISemi-circular sheet metal trunnions 49 are` se-A atopposite ends to the standard by screws I9 and "cured to 'the under-sideof -the saw table 44 and 20 threaded into the standard. The screw 20rest on -the trunnion brackets, the tilting axis 55 preferably being inthe plane of the saw and adjacent the plane of thetop surface of thetable. The trunnions are arranged in pairs and have peripheral flanges50 resting on the trunnion brackets, the flanges being spaced to admit aclamping bolt 5| between them. The head of the boltis non-rotatablyseated in a clamping member 52 engaging the inner faces of the trunnionflanges 50, and vthe shank of the bolt passes through the bore 48 in thetrunnion bracket, a

vclamping hand-Wheel nut 53 being threaded on the bolt.

The arbor-carrying bracket 21 and the frame on which it is mounted forma unit assembly which is easily secured to the base or standard I0 bymerely omitting the hand-crank 4 I, inserting the frame into thestandard from above by a combined turning and lowering movement, andapplying the screws I9 and 20, the hand-crank 4| being then attached tothe shaft 38. When inserting the frame, the outer end of the shaft 38 isrst introduced into the standard. The removal of the frame is equallysimple.

In order to adjust the saw so that it will be parallel tothe directionof work travel, the arborsupporting frame is swung laterally about thescrew I9, ne adjustment v.being effected by the set-screw 22 engagingthe screw 20. When the proper adjustment is reached, the screws i9 and2|) are tightened. By means of this construction, manufacture andassembly are facilitated, and accurate positioning of the saw is madepossible notwithstanding variations in manufacture.

In that form of the invention shown in Figs. 5 to 8, designates a b aseor standard having spaced upright walls H2, and ||3, connected by endwalls ||4 and H5, lthereby forming two laterally adjacent chambers H6and' H1, the latter being a saw'chamber and sawdust chute.

The upper portion of the standard is provided with spaced lugs |21 inwhich a horizontal saw arbor |3| is journalled, the arbor carrying apulley |32 at 'one end and a circular saw |33 at the other end, the sawbeing placed in the saw Y |20. The reduced end of one of the rods passesthrough an opening |2| in the support, as seen in Fig. 8, the openingbeing somewhat larger than the rod end so as to permit lateraladjustment of the support, the other end portion of the yoke pivoting onthe other rod end. Fine ad- Y justment of the support is effected by ahorizontal set-screw |22 threaded in the support and bearing against therod end, the set-screw being provided with a-lock-nut |23.

The elevation of the trunnion support isadjusted by nut-forming gears|36 threaded on the rods |25 and meshing with gears |31 formed on ahorizontal shaft |38 journalled in the end Walls of the standard ||0,one end of the shaft carrying a hand-crank |4|. 'Ihe nut-forming gears|36 are confined against axial movement by apertured lugs |24 on thestandard or base, the lugs.

also forming guides for the rods. The rotation of the hand-crank servesto vertically shift the rods |25 through the connected gearing, therebyYchanging the elevation of the trunnion support or yoke.

the base wall ||2, the skirt having a slot |38 to pass the saw arbor andhaving spaced flanges |28 between which the saw is placed.

The circular-saw |33 is disposed in a vertical plane and projectsthrough a slot |42 in a soft meta1 insert plate |43 of a saw table |44.The saw table is provided with the usual gage grooves |45 and is securedto the supportor yoke ||8, preferably in a manner permitting the tableto be tilted. Inthe present instance, the support or yoke is formed atopposite ends with trunnion brackets |46 each having an arcuatesaddleforming bearing face |41 and a radial bore |48. The table isprovided with trunnions 49, as in the Fig. 1 device, secured to thetrunnion brackets |46 in the same manner.

In order to adjust the saw |33 so that it will be parallel to thedirection of work travel, the support, or yoke ||8 is swung laterallyabout the reduced end of the front rod |25, fine adjustment beingeffected by the set-screw |22 engaging the rear rod |25. When the properadjustment is reached, the nuts ||9 and |20 are tightened. 'I'he saw maythus be accurately positioned notwithstanding variations in manufacture.

'For the purpose of illustration, two embodiments of the invention havebeen disclosed, in one of which the saw arbor is adjusted with respectto the table, and in the other of which the table is adjusted withrespect to th's'aw arbor. In either case an adjustment is eected sothatv the direction of work travel will be parallel to the plane of thesaw or at right-angles to the axis of the arbor. While the invention ishere shown to be embodied in a circular-saw machine, it is alsoapplicable to other machine tools.

What I claim as new and desire to secure by Letters Patent is:

l. In a wood-Working machine, the combination of a, base, a cutter arborrotatably carried by said base, a table support secured to said base andangularly adjustable thereon in a lateral direction for varying thedirection of work travel with respect to said arbor, and a work tablesecured to said support and angularly movable with respect to saidsupport about an axis substantially parallel to the direction of worktravel.

2. In a wood-working machine, the combination of a` base, a frame havinga top member and parallel vertical guides, a bearing member slidablymounted on said guides, a cutter arbor rotatably carried by said bearingmember, means carried by said frame for adjusting the elevation of saidbearing member, fastening elements for securing said top member to saidbase, said top member having a relative lateral movement with respect toone of said fastening elements for angularly adjusting said frame withrespect to said base, andfa ywork table carried by said base.

3. In a wood-Working machine, the combination of a base, a trunnionsupportl vertically movable on said base, a work taLe trunnioned on saidsupport and having a work-guiding surface, a saw arbor having a mountingon said base, and means for angularly adjusting said support withrespect to said base to effect parallelism between the plane of the sawand the work-guiding surface.

4. In a wood-Working machine, arbor-supporting means comprising amounting member having spaced apertures, fastening members received, insaid apertures, said mounting member beingpivoted on one of saidfastening members. and the other fastening member passing looselythrough its aperture, a set-screw in said mounting member engagingsaidlast-named fastening member aoaasio to angularly displace saidmounting member, and clamping means for said fastening members.

V5. In a wood-working machine, Athe combination with a work table andcutter arbor, of means for adjusting the relative angular position ofsaid table and arbor comprising a member having spaced apertures,fastening members received in` table and arbor comprising a pair ofparallel,

rods, supporting means in which said rods are slidable, a cross memberconnecting said rods and pivoted on -one 'of said rods, said crossmember having relative lateral play with respect to the other rod, aset-screw in said cross member adjacent said last-named rod forangularly displac- -ing said cross member, and clamping means forsecuring saidV cross member to said rods in angularly adjusted position.j

'7. In a wood worlring machine, the combination of a housing, a frameinsertable into said housing and having a mounting member, a work tablesecured to said housing, means for adjustably securing said mountingmember` to said housing, and a cutter arbor carried by said frame and Yadjustable in angular position with respect to said housing and table byshifting said mounting member.

8. In a wood-working machine, combination of a housing having anopening, a work table secured to said housing, a frame insertable intosaid housing through said opening and in cluding a cover member for saidopening, means,

for ladjustably securing said cover member to said housing, and acutterarbor carried by said frame and adjustable in angular positionwith respect to said housing and table by shifting said cover member. ll

9. In a wood-working machine, the combination with a work table andcutter arbor, bf means for adjusting the relative angular position ofsaid ltable and arbor comprising a pair of pivotally connected members,means for releasably clamping said members adjacent their pivotal axis,at least one of said members having an aperture spaced from said pivotalaxis, the other member having a fastening element entering loosely insaid aperture, said fastening element effecting a releasable clampingengagement of said members, and a set-screw in said apertured memberengageable with said fastening element to eiect relative angulardisplacement of said members.

10. In a wood-working machine, thecOmbination of a supporting member, acutter arbor rotatably carried bysaid supporting member, atable-engaging member secured to said supportving member and angularlyadjustable thereon in a lateral direction for varying the direction ofwork travel with respect to said arbor, and a work table secured to saidtable-engaging member and relatively 'angularly movable with respect tosaid table-engaging member about an axis substantially parallel to thedirection of work travel.

11. In a wood-working machine', the combinationof -a supporting member,aframe having a guide portion, a bearing member slidably mounted on saidguide portion, a cutter arbor rotatably carried by said bearing member,means for adjusting the elevation of said bearing memberon said guideportion, fastening elements for securing said frame to said supportingmember, said frame having a relative lateral movement with respect toone of said fastening elements for angularly-adjusting said frame withrespect to said supporting member, and a lWork table secured to saidsupporting member.

HERBERT E. TAUTZ.

